Old English bana "killer, slayer, murderer, a worker of death" (human, animal, or object), also "the devil," from Proto-Germanic *banon, cognate with *banja- "wound" (source also of Old Frisian bona "murderer," Old Norse bani "death; that which causes death," Old High German bana "death, destruction," Old English benn "wound," Gothic banja "stroke, wound"), a word of no certain IE etymology. Sense of "that which causes ruin or woe" is from 1570s. Related: Baneful.
[mark on skin resulting from a wound or hurt] late 14c., scarre, "trace left on skin by a healed wound, burn, etc.," from Old French escare "scab" (Modern French escarre), from Late Latin eschara, from Greek eskhara, in medical writing "scab formed after a burn," which is of uncertain origin.
The English sense probably shows influence of another noun scar "crack, cut, incision" (Middle English scarre, skar; attested from late 14c. into 17c.), which is from Old Norse skarð and related to score (n.). Figurative sense attested from 1580s. Old English glossed Latin cicatrix with dolhswað, from dolh "wound" + swað "track, trace."
1805, "to pluck a stringed instrument;" 1808 in sense of "drop down abruptly;" 1888 as "to hit, wound, shoot." Probably of independent imitative origin in each case. Related: Plunked; plunking.
"eviscerate, wound so as to permit the bowels to protrude," c. 1600, from dis- + embowel. Earlier form was disbowel (mid-15c.); embowel, with the same meaning, is attested from 1520s. Related: Disemboweled; disembowelment.